21003036364 has 12 divisors (see below), whose sum is σ = 36915818800. Its totient is φ = 10455659568.

The previous prime is 21003036337. The next prime is 21003036377. The reversal of 21003036364 is 46363030012.

It is a super-2 number, since 2×21003036364² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11463624 + ... + 11465455.

Almost surely, 2^21003036364 is an apocalyptic number.

It is an amenable number.

21003036364 is a deficient number, since it is larger than the sum of its proper divisors (15912782436).

21003036364 is a wasteful number, since it uses less digits than its factorization.

21003036364 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22929312 (or 22929310 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 28.

Adding to 21003036364 its reverse (46363030012), we get a palindrome (67366066376).

The spelling of 21003036364 in words is "twenty-one billion, three million, thirty-six thousand, three hundred sixty-four".